. . "An iron-salen complex represented by any of the following Formulas (I) to (V): (where X is any of the following: ???H ???CO2Me ???CO(OCH2CH2)nOCH3 (where R2 comprises a plurality of bound nucleic acids selected from the group consisting of adenine, guanine, thymine, cytosine, or uracil) or ???NHR1 (where R1 is a substituent with a hydroxyl, a substituted hydroxyl, an ester, or a carbonyl) (where X" . .